Complete assignments of 1H and 13C NMR spectral data for three new triterpenoid saponins from Ilex hainanensis Merr.
Three new oleanane-type triterpenoid saponins, ilexhainanoside C, D and E, all with 24, 28-dioic acid groups, were isolated from the leaves of Ilex hainanensis. They were 3beta-hydroxyolean-12-ene-24, 28-dioic acid-28-O-beta-D-glucopyranoside(1), 3beta, 19alpha-dihydroxyolean-12-ene-24, 28-dioic acid-28-O-beta-D-glucopyranoside(2) and 3beta, 29-dihydroxyolean-12-ene-24, 28-dioic acid-28-O-beta-D-glucopyranoside(3). The structures of these three new compounds were elucidated and complete assignments of the (1)H and (13)C NMR spectroscopic data were achieved by 1D and 2D NMR experiments [heteronuclear single quantum coherence (HSQC), HMBC and rotational nuclear Overhauser effect spectroscopy (ROESY)].
Chen
Xiao-Qing
XQ
Key Laboratory of Modern Chinese Medicines (China Pharmaceutical University), Ministry of Education, Nanjing 210009, People's Republic of China.
Yang
Jie
J
Liu
Xiao-Xiao
XX
Lai
Mao-Xiang
MX
Wang
Qiang
Q
D002247:Carbon Isotopes; D030017:Ilex / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D012503:Saponins / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry
D002247:Carbon Isotopes; D012503:Saponins; D014315:Triterpenes